An Oracle ADF Introduction
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The document provides an overview of Oracle Application Development Framework (ADF). It describes ADF as an Java EE framework that implements the model-view-controller architectural pattern. It discusses the key components of ADF including the view layer (ADF Faces), controller layer (ADF Controller), and model layer (ADF Business Components and ADF Model). It also provides examples of how to create ADF applications using the integrated development environment and drag-and-drop functionality.
An Oracle ADF Introduction
- 1. Powerful Enterprise Rich Internet Application Development with ADF An Oracle Application Development Framework Introduction
- 2. Jean-Marc Desvaux Head of Information Systems GENERAL CONSTRUCTION CO.LTD @jmdesvaux
- 3. What is Oracle ADF ?
- 4. Common Enterprise Web App Architecture CLIENT (Browser or Mobile App or Web Service consumer) Web Tier (HTTP Server/SSO Agent/.. ) Business Tier / App Server (JEE server/ASP.NET server/..) Data Store/Data services Tier (RDBMS/NoSQL Databases/Web Services/..) ADF technology footprint on both the Server side (App server) and on the Client side
- 5. ADF is a Java EE Framework implementing an MVC architectural pattern with the support of an Integrated Development Environment (IDE)
- 6. A Framework is a structure intended to serve as a support or guide for the building of something that expands the structure into something useful. Use those blocks, don’t redesign and rebuild them each time
- 7. The MVC Pattern (Model View Controller) separates th implementation of the : -UI (View) Interface, Adaptive Rendering, Skinning/Look&Feel -Application Flow & business logic between UI and Data (Controller) Event handling, page navigation/flow -Data (Model) ORM, Operations, Validation There are many frameworks out there for each layer to help implement them Typically JavaScript HTML --------- Controller Servlet ---------- Java (EJB,JPA, Hibernate, Spring)
- 8. MVC Architecture can be complex and requires heavy background work to : - Standardize design and coding - Design for Reusability - Control code quality to prevent anti-patterns (not compliant with pattern, coding in wrong place) - Master each MVC layer sub-frameworks
- 9. The ADF value : Coupled with an IDE (Jdeveloper or Eclipse+OEPE), It brings together for you a number of standards & sub-frameworks which it extends to provide an end-to-end, metadata-driven framework to help you build Business Applications with more productivity, quality and ease of maintenance. It is sometimes qualified as a meta-framework
- 10. The MVC Pattern the ADF way: View: ADF Faces Based on JSF Standard. JavaScript & Ajax based components, latest components set known as Alta UI Controller : ADF Faces Controller Extending JSF (2.0) to improve capabilities, Task flows concepts to go beyond pages flow controls. Model : ADF BC (Business Services) Defines objects that map to database tables (ORM), manage data & business logic validation, coordinates M/D, provides default operations (commit, delete, insert, update) ADF Model (Bindings) Abstract the Business service attributes and actions implementation to the View layer. The Glue between the View and the Business services ADF Faces --------- ADF Controller ---------- ADF Model ---------- ADF BC
- 12. ADF BC APPLICATION MODULE(S) View Objects Instances & Transaction Container (Each defines the Transaction boundary for committing or rollback) SERVICEApplicationModuleImpl class (access & manage VOs, custom method/oper) VIEW OBJECTS & View Links Application-specific view of records queried into Entity Objects, View Links define relationships between View Objects EO EXPOSUREViewObjectImpl (execute query,..), ViewRowImpl classes (set attrib.) ENTITY OBJECTS & Associations Mapped Database Data Model (Object-Relational Mapping), data types mapping Associations define relationships between Entities Objects, Act as DB records Cache CACHEEntityImpl class (create(), remove(), do_DML(),..) One runtime instance for each EO, VO or AM; You can hook into these classes to add custom code
- 13. Adding Business components to a new Application (choosing to create from Tables) You will be prompted to enter a database connection configuration & once connected you will be driven by a wizard to quickly create your business components. Once completed, you will create an Application Module by selecting the Business components to be used by your Application
- 14. ADF Model
- 15. BINDINGS Created on Drag and drop from Data Control Panel onto a Page. Types (Depending on UI Component) : Attribute, Tree, Action, Method, List Bindings UI components reference the binding using Expression Language (EL) DATA CONTROLS Abstraction of Business Service (XML definitions of the Service) DC created automatically when you create Business Components in ADF Exposed in the IDE via the Data Control Panel ADF MODEL The “glue” between the View Layer and the Business services Business Services exposed consistently and UI components capable of binding to this Business Service Abstraction. UI does not depend on how the Business Service is implemented.
- 16. Drag & Drop ADF Bindings creation thru drag & drop
- 17. ADF Bindings View in JDeveloper thru the page editor bindings tab. An Executable is an Iterator (pointer) to the current data object, basically bindings using the same iterator will refer to the same row of the data control exposed in a Collection Object (Table). You can also add, delete or edit the bindings
- 19. Business ServicesADF Page #{Binding Expression} for a page component (text item, button,..) referencing a value or action or Iterator binding using EL (Expression Language) ADF Model (Binding Context) Binding Container Action bindings Value bindings iterator bindings Data Control Data Control ADF BC Application Module EJB Session Bean
- 20. ADF View
- 21. ADF FACES - Oracle’s offering of JSF components - Provides Visual UI components (Input Text, button,..) - Provides Layout components (to organize application page real- estate utilisation) - Provides Drag & drop, popup dialogs, page templates,… - Developer works with components & is protected from components implementation details => future-proofing of the component used : >New display devices, evolution of markup languages
- 22. ADF FACES - UI specific code in managed beans (java classes managed by JSF) - EL (Expression Language) allowing UI component to refer to a java bean associated with the application Ex : #{mybean.myValue} for managed bean mybean & a call to getMyValue() accessor in the bean. - EL is mainly to hook up UI components to the framework class that implements the binding to the business service
- 23. ADF FACES JDeveloper Editor UI
- 24. ADF FACES
- 25. ADF FACES – Alta UI components
- 26. ADF Controller
- 27. ADF Controller - Navigation Cases (Application Flow) - Page Life Cycle enriched - Task Flows - Regions - Page fragments - Popups - Partial Page Rendering
- 28. ADF Task Flows - Unbounded Task Flow Any page in the TF can be accessed directly - Bounded Task Flow Reusable flow that can be referenced by any other Task Flow, bounded or not. Can receive and return Parameters. Task Flow are a set of Activities with a defined flow between each Activity, called a control flow Activities can be a View (Page), a Method Call, a Router activity (conditional flow routing), a Task Flow Call. Instead of pages, we can create TF with page fragments which can be displayed in a page Region
- 29. ADF IN ACTION
- 30. Creating a simple ADF application in 10mns Data exposed in this sample is not real and is for test purpose only
- 31. GCC WEB APPS
- 32. SINGLE ORACLE DATABASE INSTANCE GCC Information Eco-system Across Project or for a specific Project only
- 33. Requirements • Ensure continuous Development to keep adding value to the business • Growth intention : more modules as we go • Foundation for sustainable App development • Be able to move slowly from one version to another and have in transition periods coexistence of different Framework versions • Grasp Framework enhancements in new versions to add value globally to all Apps with minimum impact and with progressive updates of our Apps • Protect Development Investment
- 34. Requirements • Be able to enable Apps services to any new Project as from day one. • Frequent Access Control reviews as and when new Projects are allocated to GCC and resources are reallocated from one project to another with different Job roles/functions. • Be able to achieve fine-grained security for who can do what on each specific Project. • Drive Security declaratively thru a specific App
- 36. GCC Apps Main Menu for Project-Centric Applications Module Access and fine-grained security driven by Project & App User
- 37. GCC Apps Navigation Panel & Page Template for Project-Centric Applications
- 38. App with Alta skin Modernizing with new skins and new Components
- 39. GCC Apps Responsiveness Sample Data exposed in this sample is not real and is for test purpose only
- 40. It was maybe a bit condensed but it was hard to give you a good insight without going through this minimum information. Hope you’ve managed to grab something & that you enjoyed it…
- 41. Resources to start with ADF https://www.youtube.com/user/ADFInsiderEssentials https://www.youtube.com/user/adfarchtv http://www.oracle.com/technetwork/developer-tools/adf/overview/index.html Insider Essentials & Architecture TV YouTube channels Oracle Technology Network ADF section